Swivel mandrel



Dec. 8l 1925. v 1.565.014

T. T. KING Filed 'May 12 1924 Patented Dec. 8, 1925. i

UNITED FFICE-t f frinononn naine, or" oKLA-noian 'cifrar7 oir-nanoifimfassienon; BY Dinner ann Mnsnn ASSIGNMENTS; or rnanii-ronnrns 'rol J. ifi. wnrrsoinor oxnarionn CITY, oizLAnoMA, AND onnrounrrr'ror. B. owen. l

swivai, aannam. A

ppiieatio inea? May i2', .1924. serial No. '712,877'.

To allfwwm t may concern.: I'

Be it known that I, Triiiononn T. KING, a citizen of the 'United States, residing at Oklahoma. City, in the county of klahomav and State of Oklahomahave' inve'i'ited certain new and useful Improvements in Swivel Mandrels, of which the following is a; sp'ecication. Y

This invention 'relates to a' swivel mandrel, and particularly toVV a` const'ructioi'i in which the cable securi'n'g'member is contai'i'ied with in a socket 'body and the parts are capable of relative rotary movement as Ausual in oi l' well or other drilling.

ln devices of this character the cable is secured to the swivel member by embedding ts'lower end in a body of fusible metal and it is necessary to heat this member whenl it is desired toremoveand replace' the cable connection for any reason. In prior constructions this heating'afects thetemper and diameter of the mandrelcausingthe parts to bind andYK unevenly wear the socket', and also pi'eif'enting theV desired impact action.

If the cabley securino` connection be detached f or separately movable from the `mandrel member an undesirable hamn'ierin'g between the parts results.

This invention' has for an object toprovide a. novel and improved construction wherein a mandrel and cable" securing connection are detachably interlocked so that they may-be separated for heating purposes andthe man-- dre'l' always retainedl at its' originali fit and temper while the interlocked connectiony prevents hammering of the membersy upon each other as they' move asa unit, thusin'suring an even wear of the socket bore. v

Another object of the invention is-to'provide an improved connection between the cable seeuring member and the mandrel member comprising a bayonet slot and pin7 together with means for locking the pin in its secured position when the parts are assembled so as to prevent any relative movement and present a smooth continuous operating face for contact with the bore of the socket.

Other and further objects and advantages of the invention will be hereinafter set forth and the novel features thereof defined by the appended claims.

The 'numeral' 10 des'ignat'esa sooket orfb'ody of any desired -siZ'e-fr configuration having an interior bore 11 within which the ina-n-I diel member 121s mounted for reciprocatory and rotary movement.- This socket'is pro- 1 vidcd at its lower end with the' usual threaded opening l-for the lreception of the tool and with an exteriorly threaded conne'e tion lt at its upper' portion 15; This por! tion islformed` withi a-bore 16 ofsubstantially the dia-meter ofl theoperating cable 17l which passes therethrough!and is secured to the block member 18" whiclr is of similar diamh eter tol the mandrel- 12 and closely fits the interiorl of the socket borev 1l.

lcable 17 is secured tothe 'block 181 infany.

desired manner, preferably Y by theV use of a fusible Babbitt-metalinserted l inst-he" enlargedf' recess 19 to surround and-'im'bed the lower endA of the cableE forming a rig-id con nectionfwith the block forthe operation o; the tool.

vThe block 18 is detachably interlockedi with the mandrel 12-so as to move asa unit therewith, anda preferredforin of'such connection comprises a pin-20fcarried by the' neck- 21 from the seicuringq block- 18 and adapted to f seat in al socket 2.2i formed in thewallfof the mandrelmember 12; This 'wall'- is alsot formedf-withfan eloiigatedslot 2'?) through which the pin passes when the parts are assembled until it reaches its locking position at the socket 22. The parts being thus interlocked it is desirable to prevent any accidental disconnection during the opera-tion of the tool and for this purpose' a latch bar 24 is disposed in the slot 23 and pivotally mounted at its upper end by means of a cross pin 25 so as to swing outwardly from the slot asshown by dotted lines in Figure 2, and to lie Hush with the outer wail of the mandrel when in closed position.

This bar may be provided with a recess or socket 26 at its lower portion for the pur-` pin into alignment with the slot and directly separating the parts. The securing block may thus be Yheated to remove or replace the cable connection without in any wise ai'ecting the temper or diameter of the mandrel member as it is important to maintain the proper fit of this member in order to prevent an uneven wear of the bore of the socket and Ymaintain a free swiveling movement of the tool under all conditions of use.

It has also been found important to positively interlock the cable securing block with the mandrel in order to prevent any relative movement or hammering of these parts upon each other which tends to atleet their fit within the'socket by producing an increased diameter at the points of contact. This is eiiectually accomplished by the use of the interlocked connection between the neck of the securing block and the mandrel, together with the retaining latch by which the bayonet slot and pin are secured in interlocked position.

l/Vhile the specific construction of the interlocked connection has been shown and described, the invention is not conined thereto as it is Yobvious that changes and alterations may be made without departing -rom the spirit of the invention as recited by the following claims.

Having thus described my invention, what I claim as new and desire to secure by Letters'Patent is:

terlocked with said swivel member by a.

bayonet slot and pin connection therewith.

l3. In a tool of the class described, a socket, a swivel member disposed therein, a cable securing member detachably interlocked with said swivel member, and a locking member mounted upon the swivel to prevent movement of said connection in operation. i

4l. A swivel mandrel provided with a recess therein, a securing block having a neck adapted to enter said recess, and an interlocked connection between said neck and the walls of said recess.

5. A swivel mandrel provided with a recess therein, a securing block havinga neck adapted to enter said. recess, and arpin projecting from said neck and adapted to be immovably retained by a seat in the wall of said recess.

(i. A swivel mandrel provided with a recess therein, a securing block having a neck adapted to enter said recess, a pin projecting from said neck and adapted to be immovably retained by a seat in the wall of said recess, and a latch bar mounted upon said wall and adapted to retain said pin within said seat.

7. In a swivel mandrel, a body member provided with a recess having in its outer wall an elongated slot and lateral seat, a cable securing block provided with a neck entering said recess, and a pin uponsaid neck adapted to traverse said slot and enter n THEODORE T. KING. 

